{"query": "431", "brand": null, "total": 5, "limit": 10, "matches": [{"slug": "iwc-431", "brand": "IWC", "ref": "431", "model": "B-UHR (Grosse Fliegeruhr)", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/iwc-431", "description": "The IWC B-Uhr Reference 431, also known as the Grosse Fliegeruhr, was produced in 1940 for the German Luftwaffe. Collectors value this reference for its historical role as one of the five original manufacturers of the Beobachtungsuhr. The watch features a 55mm matte-finished staybrite stainless steel case designed for wear over flight suits and utilizes the Calibre 52 T.S.C. movement, which includes a central hacking seconds function for precise synchronization. The dial follows the Type A configuration with a luminous triangle and two dots at twelve o'clock. Approximately 1,000 units were manufactured, making it a rare military instrument. On the secondary market, these watches typically command prices in the mid-to-high five-figure range, often between $30,000 and $60,000 depending on condition. A notable auction result occurred at Christie’s in 2015, where a well-preserved example realized approximately $56,000.", "score": 198}, {"slug": "vacheron-constantin-patrimony", "brand": "Vacheron Constantin", "ref": "43175", "model": "Patrimony Perpetual Calendar", "case_material": "18k Rose Gold", "url": "https://mostexpensivewatches.net/reference/vacheron-constantin-patrimony", "description": "The Vacheron Constantin Patrimony Perpetual Calendar reference 43175 in 18k rose gold was introduced in the early 2010s and remains a cornerstone of the brand’s high-complication catalog. Collectors prioritize this reference for its ultra-thin profile, measuring 8.9mm thick, which houses the caliber 1120 QP. This movement is based on the Jaeger-LeCoultre 920 ebauche, a historically significant caliber used by the \"Holy Trinity\" of watchmaking. The 41mm case features a minimalist opaline dial with applied gold hour markers and a moon phase disk made of 18k gold. On the secondary market, this reference typically trades between $55,000 and $75,000 depending on condition and the inclusion of original accessories. A notable production detail is the transition from the Geneva Seal stamped on the movement bridges to the updated Poinçon de Genève standards, which evaluate the entire finished timepiece for chronometric accuracy and finishing.", "score": 83}, {"slug": "a-lange-s-hne-143", "brand": "A. Lange & Söhne", "ref": "143", "model": "Zeitwerk Decimal Strike Honeygold", "case_material": "18k Honeygold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/a-lange-s-hne-143", "description": "The A. Lange & Söhne Zeitwerk Decimal Strike Honeygold reference 143.050 was released in 2017 as a limited edition of 100 pieces and is no longer in production. Collectors prioritize this reference for its use of the proprietary 18k Honeygold alloy, which is harder and more scratch-resistant than standard gold, and its unique acoustic complication. Unlike the standard Striking Time that chimes on the hour and quarter-hour, the caliber L043.7 in this model sounds a high-pitched tone every ten minutes to align with the digital jumping numerals. The dial features a silver-white finish with a hand-hammered tremblage bridge. On the secondary market, this reference typically commands prices in the mid-to-high six-figure range, often fluctuating between $120,000 and $180,000 depending on provenance. A notable auction result occurred in 2021 when a well-preserved example sold for approximately $140,000, confirming its status as a high-value rarity.", "score": 71}, {"slug": "roger-dubuis-043", "brand": "Roger Dubuis", "ref": "043", "model": "Easy Diver Flying Tourbillon", "case_material": "18k White Gold and Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/roger-dubuis-043", "description": "The Roger Dubuis Easy Diver Flying Tourbillon reference SE48 02 9 0/S 3.53 was produced during the mid-2000s, specifically around 2005 to 2008, and is no longer in production. This reference is noted for its 48mm case construction combining an 18k white gold bezel and crown guards with a stainless steel mid-case. It houses the manual-wind Caliber RD02, a Poinçon de Genève certified movement featuring a one-minute flying tourbillon visible at the six o'clock position. Collectors value this model as a representation of the brand’s \"Golden Era\" under the founder’s influence, characterized by oversized sports aesthetics paired with high-complication finishing. This specific reference was limited to 280 pieces globally. On the secondary market, these timepieces typically trade between $25,000 and $40,000 depending on condition and completeness. A similar variant exists in full 18k rose gold, which commands a higher price premium at auction.", "score": 71}, {"slug": "vacheron-constantin-43043", "brand": "Vacheron Constantin", "ref": "43043", "model": "Historiques", "case_material": "18k Rose Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/vacheron-constantin-43043", "description": "The Vacheron Constantin Historiques Ultra-Fine 1955, reference 43043/000R-9592 in 18k rose gold, was introduced in 2010 to commemorate the brand's 255th anniversary and remains in limited production. Collectors prioritize this reference for the Calibre 1003, a manual-wind movement measuring 1.64mm thick, which holds historical significance as one of the thinnest mechanical movements ever produced. The 36mm case features a total thickness of 4.13mm and includes a solid gold dial with a silvered opaline finish and minimalist baton markers. The secondary market price for this reference typically ranges from $16,000 to $22,000 depending on condition and the presence of original documentation. A notable production detail is the Hallmark of Geneva certification, which is visible through the sapphire caseback. While the 1955 original utilized a yellow gold alloy, this modern 43043 variant utilizes 4N rose gold to meet contemporary aesthetic preferences.", "score": 71}]}